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-rw-r--r--README.md2
1 files changed, 1 insertions, 1 deletions
diff --git a/README.md b/README.md
index 9d0ae0b..2fc52c3 100644
--- a/README.md
+++ b/README.md
@@ -136,7 +136,7 @@ Default: `n`.
 	             | =~                -- POSIX Extended Regular Expressions
 	             | =~~               -- case insensitive POSIX Extended Regular Expressions
 	
-	<str>      ::= " [^"]+ "
+	<str>      ::= " ([^"] | "")+ "  -- use "" for a single " inside "
 
 	<typetest> ::= type == ( b | c | d | p | f | l )